答：用SAX 方式解析XML，XML 文件如下：
<?xml version=”1.0″ encoding=”gb2312″?>
<person>
<name>王小明</name>
<college>信息学院</college>
<telephone>6258113</telephone>
<notes>男,1955 年生,博士，95 年调入海南大学</notes>
</person>
事件回调类SAXHandler.java ：
import java.io.*;
import java.util.Hashtable;
import org.xml.sax.*;
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public class SAXHandler extends Handlerbase{
private Hashtable table = new Hashtable();
private String currentElement = null;
private String currentValue = null;
public void setTable(Hashtable table){
this.table = table;
}
public Hashtable getTable(){
return table;
}
public void startElement(String tag, AttributeList attrs)
throws SAXException{
currentElement = tag;
}
public void characters(char[] ch, int start, int length)
throws SAXException{
currentValue = new String(ch, start, length);
}
public void endElement(String name) throws SAXException{
if (currentElement.equals(name))
table.put(currentElement, currentValue);
}
}
JSP 内容显示源码,SaxXml.jsp:
<HTML>
<HEAD>
<TITLE>剖析XML 文件people.xml</TITLE>
</HEAD>
<BODY>
<%@ page errorPage=”ErrPage.jsp”
contentType=”text/html;charset=GB2312″ %>
<%@ page import=”java.io.*” %>
<%@ page import=”java.util.Hashtable” %>
<%@ page import=”org.w3c.dom.*” %>
<%@ page import=”org.xml.sax.*” %>
<%@ page import=”javax.xml.parsers.SAXParserFactory” %>
<%@ page import=”javax.xml.parsers.SAXParser” %>
<%@ page import=”SAXHandler” %>
<%
File file = new File(“c:people.xml”);
FileReader reader = new FileReader(file);
Parser parser;
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
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SAXHandler handler = new SAXHandler();
sp.parse(new InputSource(reader), handler);
Hashtable hashTable = handler.getTable();
out.println(“<TABLE BORDER=2><CAPTION>” +
“教师信息表</CAPTION>”);
out.println(“<TR><TD>姓名</TD>” + “<TD>” +
(String)hashTable.get(new String(“name”)) +
“</TD></TR>”);
out.println(“<TR><TD>学院</TD>” + “<TD>” +
(String)hashTable.get(new String(“college”))
+”</TD></TR>”);
out.println(“<TR><TD>电话</TD>” + “<TD>” +
(String)hashTable.get(new String(“telephone”))
+ “</TD></TR>”);
out.println(“<TR><TD>备注</TD>” + “<TD>” +
(String)hashTable.get(new String(“notes”))
+ “</TD></TR>”);
out.println(“</TABLE>”);
%>
</BODY>
</HTML>
